The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when it's a good idea to plant centaurea by reviewing the USDA zone info for Carlisle.

Planting Calendar for Centaurea

Frost tolerance for centaurea:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Centaurea tend to make it in moderate cold which means that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant centaurea in Carlisle is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant centaurea and expect a good harvest is probably September. Any later than that and your centaurea may not have a chance to fully mature. You can get started a few weeks earlier by starting your centaurea indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Carlisle. It might get as low as -5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Carlisle is just an average and the actual date of last frost will vary from year to year. Since half of the time in Carlisle there is a last frost after April 15 be ready to protect your centaurea in the event of one of those late frosts.

USDA Zone Info for Carlisle

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Carlisle

You may be interested in your other planting guides for Carlisle.